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authorMatthew Smith <mgsmith@netgate.com>2021-10-04 15:19:44 -0500
committerNeale Ranns <neale@graphiant.com>2021-10-13 07:17:54 +0000
commitac4e61205dcf365396ca44941ad055c7bd88c631 (patch)
treefb46d814aefbdca434a2e86433f97668e9d8c9b5 /src/vlib/linux
parentb5dec932b78c662134bc3c93cc23a355918e1632 (diff)
interface: handle error during admin-up correctly
Type: fix In vnet_sw_interface_set_flags_helper(), the variable old_flags is set to the original value of vnet_sw_interface_t.flags for an interface. If an error occurs during the process of bringing an interface up, old_flags is used to restore the original value. Before the dev class or hw class admin_up_down_function can be called, but after modifying vnet_sw_interface_t.flags to it's new value, old_flags is set to the value of vnet_sw_interface_t.flags a second time. This discards the original flags that were being preserved. As a result, if an interface is being brought up and the dev class or hw class function fails, at the end VPP believes that interface is up. This can cause a crash if packets are routed through the interface and some RX/TX initialization was not completed because of the error while bringing the interface up. Change-Id: Ica6b6bac13c24e88c4136bf084cd392e6217e7d9 Signed-off-by: Matthew Smith <mgsmith@netgate.com>
Diffstat (limited to 'src/vlib/linux')
0 files changed, 0 insertions, 0 deletions